Carbureter.



H M. DALTON & O. M. CONKLIN.

GARBURETER. APPLICATION FILED AUG. 9, 1912.

Patented Feb. 17, 1914.

\ V 1 VII/11010111011111,

attomu HARRY M. DALTON'AND CHARLES M. CONKLIN, OF CINCINNATI, OHIO.

CARBURETER.

Specification of Letters Patent.

Application filed August 9, 1912.

Patented Fcb.17, 1914.

Serial No. 714,296.

To all whom it may concern Be it known that we, HARRY M. DALTON andCHARLES M. CONKLIN, citizens of the United States, residing atCincinnati, in the county of Hamilton and State of Ohio, have inventedcertain new and useful Improvemerits in Carburetors; and we do herebydeclare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same.

Our invention relates to carbureters, such as are in use in connectionwith internal combustion engines, and the object of the invention is toprovide a carburetor of this type, capable of adjustment to normalconditions of operation and being provided with means whereby undervarying conditions the required volume of fuel may be supplied and therequired volume\of air au-.

tomatically added thereto, to effect the proper working of the engine,and it will be noted that by our improvement, the necessit of a floatvalve is obviated.

he invention is clearly illustrated in the accompanying drawings, inwhich;

Figure 1 is a vertical sectional view of our improved oarbureter,through the outlet to the engine. Fig. 2 is a vertical sectionalviewtransverse to that shown in Fig. 1.

Fig. 3 is a plan view, of the base of the carbureter. Fig. 4 is a bottomplan view of the main body of the carburetor. Fig. 5 is a sectional viewof a securing collar for the torsion wire. Fig. 6 is a top view of thesame. Fig. 7;, s a plan view of collar and handle for contrtilling thetorsion wire.

1 represents e main body of the carbureter provided with the extension 2in which is placed a suitable throttle for the engine. The main body 1is mounted upon a base 3, in which it is secured by'screws 4 or othersuitable means. The base 3 is open and is provided with a bridge 5,hollow for a portion of its length to admit a supply of fluid fuel, tothe vertical tubular part (3 which is preferably integral with, thebridge 5 and is provided with vertical slots 7. The upper end of thetubular part 6 is screw threaded and engages the internally screwthreaded part 8, the upper portion of which is of a substantiallyinverted cone shape with a laterally extending flange 10 and is providedwith apertures 11.

12 is what may be termed a primary needle valve, engaging a seat in thelower end of the tubular part (5 and'is provided with a hollow stem 13,the upper end of which 18 adapted to seat itself in the secondary valveseat 14 formed in the hollow plug 1'5 secured in said tubular part 6andprovided at its upper end with a seat for the secoudary needle valve28. The lower end of the hollow valve stem is reduced and the reducedportion is provided with apertures opening into the interior of thestem.

16 1s a flanged valve sleeve mounted on the tubular part 6, the flangedportion normally supporting the primary air valve 17 pr'ovided withapertures 18. Mounted upon the sleeve 16 is a flange washer 19. A pin 20passes through the sleeve and slots in the tubular part 6 and the stemof the pri mary medle valve, and is adapted to lie within the upturnedflange of the washer. Between the valve 17 and the flanged washer, thereis disposed the coiled spring under normal compression'between the pri-'mary air valve 17 and the washer 19 by the flange on the sleeve 16 andthe'pin 20, passing through the upper end of said sleeve. The combinedparts, to wit, the primary air valve, the sleeve 16, Washer 19 andSpring, form a wei ht which tends, to hold the primary needie valve uponits lower seat. l/Vhen, however, suction is created, these connectedparts move bodily upward,.carrying the primary needle valve with them,until said valve engages its upper or secondary seat, afterwhich anyfurtherupward movement of the primary air valve will further compressthe spring 21.

22 is an annular shell of substantially the form of the frustum of acone, shown in the drawing, and is provided with outwardly extendingflanges adapted toslidably engage the sides of the main body 1, and aninupper extremity to engage an internally screw threaded support 26,which is a199- provided with exterior screw threads to en gage asimilarly screw threaded vertical flange 27, provided in the top of themain body. The threads of the stem 25 and those of the part 26 are ofdifiercnt pitch, securing i the body of the carburetor except that whicha differential action, and the operator is enabled to effect the properadjustment with the greatest accuracy. The lower end of the valve stem25 is provided with a secondary needle valve 28, mounted in a socket insaid stem adapted to engage a valve seat in the upper end of the plug 15as shown. he valve stem 25 is flattened or squared at a portion of itslength and, said portion is pr0- vided with a vertical slot 29. Upon theflattened or square portion there is movably mounted a slide 30, thelower portion of which is provided with aslot 31 registering with theslot in the valve stem and having an outwardly extending fiangey32.

The top 33 of the main body 1, is provided 1 with a curved slot 34 and acollar 35 is loosely mounted upon the lower portion of the verticalflange 27, the said collar having a screw threaded opening to be engagedby a screw 38, which passes through a collar 39 havinglan arm orprojection 40 'loosely mounted on the upper portion of the flange 27,said screw passes through the slot 34 in the top of the main body and isadapted to engage a screw threadcdlbpening in the collar Between thecollar 35 and the slide 30 of the valve stem 25, there is interposed atension spring 42 and the bridge wire 23 passes-through the slots in theslide and valve stem.

43 is torsion Wire, one end of which is secured in the collar 35; theother end of saidtorsiou wire passes loosely through an opening in theflange 19 of the inverted cone shaped part 8, said torsion wire engagingthe bridge Wire sliding yoke 44.

45 is a hand wheel keyed to the part 26. The operation of the device isas follows: The fuel enters the carburetor through the herein the baseand is controlled the primary needle valve 12, which operates preferablyby means of a the tubular part 6, permanently attached 0 ieter.

the bridgev 5, in the base of the cal When suction is created bycranking the gin glue, the primary air valve 17 is raised admitting airinto the body of the carbureter through the openings 18 and atthe sametime raising the valve sleeve 13, the flange '19 and pin 20 which passesthrough the stem of the primary needle valve, thus raising said valveand admit-ting fuel which passes through the hollow stem 13 of theprimary needle valve, escapes through slots in the valve stem and mixeswith the infiowing air Withinthe shell 22, the mixture passing outthrough apertures 11 above the secondary valve shot. This forms thepriming or initial charge forthe engine, but as the engine con-' tinuesto move, greater suction is created aud t he primary needle valve iscarried up until it seats itself at 14, thus closing the slots T, afterwhich no fuel. can escape into passes the secondary valve 28. Shouldadditional upward pressure be exerted on the primary air valve byincreased suction, the spring will be compressed, permitting said valveto yield upwardly while still holding the upper end of the primaryneedle valve in engagement with its upper seat 14. T he secondary valve26 is mounted in a socket in the lower end of the valve stem 25. In themeanwhile a proper amount of twist has been given the torsion wire 43,by turning the handle 40 of the collar 39, said twist being maintainedby the screw 38. As still greater suction is created, the shell '22 is awill be noted that under a light draft,

or suction through the throttle, the shell 22 forms the mixing chamberand under increased draft or suction, the space within the main bodyabove the shell, becomes the mixing chamber.

What we claim and desire to secure by Letters Patent is: I

1. In a carburctcr, provided with air inlet and mixture outlet, and fuelinlet adjacent to the air inlet, a primary air valve for said air inlet,a primary fuel'valve for said fuel inlet, a secondary air valve withinthe carbureter forming a prelin'iinary mixing chamber adjacent to th'eprimary inlet valve, the carburetor being provided with a passage forthe mixture from said mixing chamber r lid secoildary air valve and themixture oulln zfmeans connected with the rimary air inlet valve forpreventing the a mission oi": fuel by the primary fuel inlet. valveduring heavy suction, and means actuated by the secondary air valve foropening the secondary fuel inletvrilve.

2. ln a carburetor provided with an air inlet and a mixture outlet, ofan air inlet valve, :1 fuel inlet adjacent to the air inlet and a. fuelinlet valve therefor, u secondary air valvbi interposed between the airinlet and mixfiiireoullel, and forming a prelim inary mixing chamber,said carbureter being provided with a passage independent of thesecondary air valve from said preliminary mixing chamber to the mixtureoutlet, a

prii'nary inlet valve controlling thesupply of fuel to the preliminarymixing chamber,

said carburetor havinga passage from the I primary fuel inlet valve tothe preliminary "a the outlet, independent of said secondary vfilvnf, asecondary fuel valve, between mixing chamber a part connected with theprimary fuel valve for closing said passage, connections between the airinlet valve and the primary fuel valve for operating the latter, asecondary fuel inlet between the secondary air valve and the mixtureoutlet, and o )erative connections between'the said secondary air valveand the secondary fuel valve.

3. In a carbureter provided with an air inlet, and mixture outlet, and afuel inlet adjacent to the air inlet, a secondary air valve providing apreliminary mixing chamber between it and the air inlet, said carburetorhaving a passage connecting said preliminary mixing chamber with theoutlet, independently of said secondary air valve, a primary air valvefor the. air inlet, a primary fuel valve, a yielding connection betweenthe air inlet valve and the primary fuel valve, means for arresting theprimary fuel valve, when moved by the primary air valve, whereby theprimary air valve may be moved by increased suction with respect totheprimary air valve, a secondary fuel inlet between the secondary airvalve and the mixture outlet, a secondary fuel valve controlling thesame and connections between the secondary air valve and the secondaryfuel valve.

4. In a carburetor the combination with a, casing having an air inletaperture adjacent to one end and a mixture outlet adjacent to the otherend, a liquid fuel inlet adjacent to the air inlet, and locatedcentrally thereof, a primary needle valve normally closing said fuelinlet, and provided with a longitudinal fuel passage, a primary airvalve for the air inlet connected with said fuel valve and holdingv thelatter normally in closed position, a stationary part located above theneedle valve, separated therefrom when the valve is in normal position,said part having av longitudinal passage to register with that in thesaid valve, a secondary air valve forming a preliminary mixing chamberadjacentto the primary air and fuel valves, said carburetor having apassage from the preliminary mixing chamber to the outlet independent ofthe secondary air valve, a secondary fuel valve normally closing thelongitudinal fuel passage in said stationary part, and operativeconnections between said secondary air valve and said secondary fuelvalve.

5. In a carbureter, the combination with air and fuel inlets, of valvesfor normally closing the same, a passage through said fuel inlet valve,an additional fuel passage at one end of said fuel inlet valve in linewith the passage in said alve, but separated therefrom, a supplementalfuel valve for said additional passage, and means whereby a heavy draftor suction will bring the inlet valve in connection with the saidadditional fuel passage and actuate the supplemental fuel valve toincrease the fuel supply.

5. In a carbureter, the combination with air and fuel inlets, of valvesnormally closing the same, the said fuel inlet valve having a passagetherethrough, an additional air valve of the form of a frustum of acone, means for moving said fuel inlet valve to discharge within thesaid additional air valve under light draft, and means for causing saidfuel inlet valve to discharge in the body of the carbureter abovethe-said additional-air valve under heavy draft or suction.

7. In a carburetor, the combination with air and fuel inlets, of valvesnormally closing the same, but adapted'to be opened by light draft orsuction, of a supplemental fuel valve, an additional air valve operableby a heavy draft or suction to admit a greater amount of air, and meansconnecting said supplemental and additional valves whereby a movement ofsaid additional air valves will move the supplemental fuel valve toadmit a greater amount of fuel.

8. In a carburetor, the combination with an additional air valve toadmit a greater flow of air under a heavy draft or suction,

.of a supplemental fuel valve having a.

slotted valve stem, said additional air valve being provided with a okepa'ssin' through said slot of the said va ve stem, and for turningsaid'additional air valve and yoke to turn said valve stem to increasethe amount of fuel when said additional air valve is moved. I 9. In acarbureter, the combination with the additional air valve to admit aeater flow of air under heavy draft or suction, of a supplemental fuelvalve having a slotted stem, supported by a threaded connection with themain body of the carburetor, said additional air valve being providedwith a yoke passing through the slot of the supplemental valve stem andmeans to turn the additional'air valve and its yoke when said valve ismoved, to cause the threaded c0nnection of the said valve stem'to raisesaid stem and valve.

10. In a carbureter, the combination with primary air and fuel inletvalves adapted to be operated by light draft or suction, of anadditional air valve to admit a greater flow of air tinder a heavy draftor suction, a su plemental fuel valve, supported by a threa edconnection of its stem with the main body of the carburetor, saidadditional air valve being connected with the supplemental fuel valve bymeans whereby a movement/0f the additional air valve will turn thesupplemental valve stem to cause its threaded connection to increase thesupply of fuel, and means to vary the extent of the movement of thesupplemental valve from like movemerits of the said additional airvalve.

ameans.

11. In a carbureter, the combination with 1 means whereby the chamberabove the said primary air and fuel inlet valves to be opi additionalvalve ismade the mixing chamerated under light draft or suction, of anadher under heavy pressure. ditional air valve adapted to be operated Intestimony whereof we afiix our signa i:

5 under heavy Clliflft or suction, means whereby i tures, in thepresence of two witnesses.

said additiona air valve forms a chamber above the same, dischargepassages for the primary air and fuel valves whereby the interior of thesaid additional air valve is i Witnesses: 10 made the mixing chamberunder a. light E. B. DAULTON,

draft or suction, and further discharging CHAS. T. GIESENBERG.

